We found 31 dictionaries that define the word chalcedony:

General (21 matching dictionaries)

1. chalcedony: Merriam-Webster
2. chalcedony: Oxford Learner's Dictionaries
3. chalcedony: American Heritage Dictionary of the English Language
4. chalcedony: Collins English Dictionary
5. chalcedony: Vocabulary.com
6. Chalcedony, chalcedony: Wordnik
7. chalcedony: Wiktionary
8. chalcedony: Webster's New World College Dictionary, 4th Ed.
9. chalcedony (calcedony): The Wordsmyth English Dictionary-Thesaurus
10. chalcedony: Infoplease Dictionary
11. chalcedony: Dictionary.com
12. chalcedony: Online Etymology Dictionary
13. Chalcedony: Wikipedia, the Free Encyclopedia
14. Chalcedony: Online Plain Text English Dictionary
15. chalcedony: Webster's Revised Unabridged, 1913 Edition
16. chalcedony: Rhymezone
17. Chalcedony: AllWords.com Multi-Lingual Dictionary
18. chalcedony: Webster's 1828 Dictionary
19. chalcedony: FreeDictionary.org
20. chalcedony: Mnemonic Dictionary
21. chalcedony: TheFreeDictionary.com

Computing (1 matching dictionary)

22. chalcedony: Encyclopedia

Miscellaneous (1 matching dictionary)

23. chalcedony: Wordcraft Dictionary

Religion (2 matching dictionaries)

24. Chalcedony: Easton Bible
25. Chalcedony: Smith's Bible Dictionary

Science (6 matching dictionaries)

26. Archaeology Wordsmith (No longer online)
27. Chalcedony: LITHICS-NET's Glossary of Lithics Terminology
28. Chalcedony: Eric Weisstein's World of Chemistry
29. Illustrated Glossary of Geologic Terms (No longer online)
30. Agate Lexicon (No longer online)
31. Anthropology dictionary (No longer online)

(Note: See chalcedonic as well.)

Definitions from Wiktionary (chalcedony) ▸ noun:  A form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally. Similar: calcedony, chalcedonius, chalcedonyx, chalcedonite, cassidony, quartzine, cacholong, onyx, jasper, calcedon, more... Types: agate, jasper, onyx, carnelian, bloodstone, chrysoprase, heliotrope, sard, more... Phrases: green chalcedony, red chalcedony, orange chalcedony, banded chalcedony, striped variety of chalcedony, more... Adjectives: white, green, translucent, blue, red, brown, gray, fine, slow, fibrous, grey Colors:     blue,     gray,     white,     lavender,     pink, more... ▸ Word origin ▸ Words similar to chalcedony ▸ Usage examples for chalcedony ▸ Idioms related to chalcedony ▸ Wikipedia articles (New!) ▸ Popular adjectives describing chalcedony ▸ Words that often appear near chalcedony ▸ Rhymes of chalcedony ▸ Invented words related to chalcedony